Revolving door



Jan. 10,1928..

H. M. KENNEDY REVOLVING DOOR Filed DeC. 9. 1926 Patented Jan. 1(7),1928.

HUGHM. KENNEDY, OIF MONTREAL,

QUEBEC, CANADA, ASSIGN'` Tes PATENT OFFICE..

n y'ro y:ma Bonner MITCHELL courrant; Linvrrrnn, oryivron'rnnar.;QANADA.

i BEVOLVING. Doon.

Application filed `December ',lhis invention relates to new and usefulimprovemi-mts in revolving vdoors'and, gparticularlyk to the sealingvmeans therefor, and the object o1' the invention is to yprovide asimple and efficient means 'for sealing the door frames at 'their inneredge Vso thatmno draue'hts will pass' between said edges and'.

the dbor supporting means. f a

Another object is `toprovide ap'lurality of Weather strips which will bevery east ly attached to the door and which Will not interfere with theVfree Working ot same.

,lin my invention I provide a plurality ot' rubber7 or like Weatherstrips, which are detachably secured by means of clamps to thesupporting means of a revolving door. The Weather strips or sealingmeans may be made of tubular iorm, or they may be made ot thin flexiblerubber strips bent to form air pockets which press the outer face of thestrip against the inner edge ot the doors when they are in 'their normalor working condition. The strips are positioned between the clamps andheld in position soy that they revolve with the door. The outer edges ofthe door `frames engage with the door enclosuie through the medium ot{iemble rubber strips. The top and bottom of each of the door frames arealso provided with iiexible Weather stripping.

In the drawing which illustrates my invention in one of its forms;

Figure .l is a side elevation of one type of door upon which my improvedWeather-strip or centre sealing means may be secured.

Figure 2 is a sectional plan of the revolving door taken on the line 2 2Figure l.

Figure 3 is an enlarged sectional plan ot the centre ot the door showingthe method employed to hold the sealing or Weather strip in position.

lrleiierring more particularly to the drawings, 11 (ilesignal'es thedoor enclosure, the upper portion 12 oi'. which is substantiallyhorizontally disposed and apcrtured to receive the uppermost end of ashaft or spindie 18. This end of the spindle is provided with a nut 27which rests on a ball bearing 2S, mounted on the shaft and en gagingwith a cross-head 29, which is provided With travellingWl'ieelsBOavliich run in channels 31 secured to part of the upperportion 12 ot the enclosure. The lower end #l2 oli' the spindle ispivot-,ally supported on a centre licor socket The sides ltot sectionsand the centre post.

.feachlextend through ,an angle v,of .slightly morethan ninetyA degreesso that at` allitirnes the door, when-in. its operative position, willbe sealed 4in the manner vhereinafter de! scribed. `The revolvingportion ofthe de-l vice consists ol' four door frames 15, eachLdisposedvat an angle yofvninety degrees to one another and radiatingtromwthe centre ofi thefspindle 13. The door being mounted on a trolley,namely the aforementioned crossheadV and its supporting Wheels, allowsthe movable sections of the door to be moved to one side of theenclosure. The sections may be pivotally secured to discs 16 secured tothe centre post 17 rotatably mounted on the spindle 13. Chains 18 orsuch like tying members may be connected between the adjacent sides ofthe door to hold them in their normal Working positions, and thesechains may b-e so connected that under pressure they will collapse toallow free'passage through the enclosure. Secured to the outer edges ofthe doors by any suitable means, are the iexible rubber strips 19, whicheX- tend beyond said edges and contact with the inner surfaces of thevertically disposed sides of the enclosure, to form a sealing means toprevent draughts from passing ila while the lower strips contact'withthe lioor 21. The foregoing is descriptive of the general type of doorat present in use, and in which the door is revolved as a unit, or itmay be pivot/ed about the disc so that it may be collapsed to allow freepassage through the door enclosure.

My improvement lies in the sealing means I employ between the inneredges of the door Extending fromtop to bottom of the post and inalignment with the centre of the inner ed ges of the door trames, whenin'their normal orwork-v ing position, arethe liexible Weather' strips22, ywhich may be of tubular form, as shown, or which may consist offlat thin rubber strips doubled over to form air pockets designated 23.The lstrips are secured between the' clamping barsQt, which `are securedto the posts by means ot the screws 2 5. The

sind

hars or `clamps 24 are so formed that their outer edges overlap the partof the weather strips adjacent the centrepost7 so that said weatherstrips are securely held and rotate with the door sections and thecentre post when rotated in the direction indicated by the arrow 26.

In operation, the spring construction of the weather strips presses theouter faces against the inner edges oit the doors to prevent air frompassing,v therethrough. It will also be'seen that by unconpling thechains, or by breaking' their connections, the door sections may beswung towards one another without causing undue wear on the weatherstripping, which assrnnes the shape shown in Figure 3 and designatedE27.

It will be readilyseen that hy sealing a doo at the centre in theinanner herein de- `rtailed,`no air `can pass between the centre postand the inner edges of the door, a very desirable feature 1n doors ofthis class. The

device is very easily attached to this t-ype of revolving door and maybe assembled there on without dismantlingor interfering with the generalworking of the door.

I-Iaving thus described iny invention, what I claim is 5- In a.revolving` door structure the combination of a cent al stationary postabout which the wings of the door revolve, clamping plates fastened t-osaid post with the edges oit adjacent plates spaced apart to providevertically extending' channels and a plurality ot elastic tubes, eachhaving a headed portion secured in one of said channels, said tubesbeing adapted to press against the inner edges of said wings to seal thespace between the wings and the post during the operation of the doorstructure.

In witness whereof, I have hereunto set iny hand.

HUGH M. KENNEDY

